Never mind, I figured it out. I replaced

IF THISFORM.cmdPause.CLICK()
MESSAGEBOX("Click OK to resume processing")
ENDIF

with

DOEVENTS
DO WHILE .T.

I created a form containing a timer control named tmrChkDir and a command button named cmdPause. What I need help on is how to check if the user clicked on the cmdPause button while the Timer event...